Alien Worlds And Underwater Cities

Imagine a peaceful and futuristic library on an alien planet, filled with glowing holographic books and strange, beautiful plants. Imagine again at dusk, a vibrant bioluminescent coral reef presenting a breathtaking spectacle, bustling with exotic fish and glowing marine life, all beneath the shimmering sea bathed in the afterglow of the setting sun. Or imagine a vibrant, whimsical underwater city, bustling with marine life, glowing coral structures everywhere, mermaids and other fantastical creatures gracefully weaving through brightly lit corridors?